ph calibration - which numbers to use?
Posted: Tue Apr 24, 2012 5:19 pm
what impact on my ph reporting will lowering the bottom number have? I got three numbers when I calibrated: 510, 539, 550. I am using 539 and my ph is reporting around 7.8. My testing says the ph is higher than that. I wondered what would happen if I change to one of the other numbers in my memory settings.
thx
thx